Stockholders' Equity (Details 6) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 03, 2011	Aug. 27, 2011	May 28, 2011	Feb. 26, 2011	Nov. 27, 2010	Aug. 28, 2010	May 29, 2010	Feb. 27, 2010	Dec. 01, 2012	Dec. 03, 2011	Nov. 27, 2010
Investment in Centaur Media
Shares of common stock held in Centaur Media									5,277,150
Increase (decrease) in noncurrent liabilities to recognize changes in funded status of a defined benefit postretirement plan									$ 77	$ 56	$ (304)
Increase (decrease) in other comprehensive income to recognize changes in funded status of a defined benefit postretirement plan									(48)	(35)	188
Accumulated other comprehensive (loss) income
Unrealized loss on cash flow hedges	(1,522)								(2,011)	(1,522)
Unrealized gain on investment in Centaur Media plc	260								1,054	260
Actuarial gain on postretirement benefits plan	284								236	284
Total accumulated other comprehensive income	(978)								(721)	(978)
Cash Dividend
Cash dividends declared (in dollars per share)	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.10	$ 0.20	$ 0.40	$ 0.40
Cash dividend paid									513	2,052	2,041
Treasury Stock
Treasury stock received in connection with exercise of stock options (in shares)									1,355
Increase in treasury stock									$ 40